Lock



June 24 1924. 1,499,211

6. GIRALICO LOCK Filed March 6. 1923 Fla. 1.

o 0 J & X o o o o X @"4 Q. 4-. o o

Q o o Patented June 2 1, 1924.

arr s s r GIOACCI-IINO GIRALICO, O1 ROCHESTER, PENNSYLVANIA, ASSIGNOB OF FIFTEEN' ONE-HUNDBEDTHS TO GIOVANNI GRIEF, O1 v ROCHESTER, PENNSYLVANIA.

LOCK.

I Application filed March 6,

ing gear teeth upon a portion of the periphery thereof is associated with rack teeth upon the lower edge of the sliding bolt with means for rotating the disk to retract the bolt. l

A primary object of the invention resides in the provision of a, lock of the type above set forth wherein an independently rotatable ratchet wheel is employed for preventing access to a bolt retracting disk until said ratchet wheel is rotated to uncover a key opening in said disk.

A further object of the invention is the provision of keys and key holes of different formation for preventing unauthorized tan-L,

pering with said lock.

WVith the above and other objects in view as the nature of the invention is better uncombination and arrangement of parts hereinafter more fully described, shown in the accompanying drawing and claimed.

In the drawing, wherein like reference characters designate corresponding parts throughout the several views,

Figure 1 is a plan view of a lock con structed in accordance with the present invention, the cover plate therefor being removed and showing the sliding and tensioned lock bolt and the operating means for retracting the same,

Figure 2 is a longitudinal sectional View taken on line 11-11 of Fig. 1 showing the key for operating the lock in engagement with the ratchet wheel and disengaged from the disk that retracts the bolt,

Figure 3 is a detail sectional view showing the key forming an interlocking connection between the ratchet wheel and the bolt operating disk,

Figure 4 shows a series of face plates or covers for the lock casing with different configurations of key openings and derstood, the same consists of the novel form,

1923. Serial no, 523,175.

Figure 5 shows different formsofpin carried'by the key.

deferring more in detail to 'the accom-:

panying drawing, there is illustrated a. lock embodying a casing that includes a bottom wall 1, side and end'walls 2 and a remov able cover wall or plate 8 havmg a key receiving opening t therein as shown in Figs 2 and the key opening being of VLIlOllS forms as shown at 4* in Fig. 1, the end 'walls 2 of the look casing constituting'the face plate and having an opening therein to permit projection of the sliding bolt 5.

The bolt 5 is provided with spaced longitudinal slots 6 that receive guide pins 7 carried by the bottom wall 1 of the lock casing while the lower edge thereof is provided with aplurality of rack teeth 8. A'key shaft 9 projects perpendicularly from the bottom" wall 1 at a point below the sliding bolt 5 as shown in Fig. 1 and has adisk 10 journaled thereon with a series of teeth 11 formed on a portion of the periphery thereof, the teeth being in constant engagement with the rack teeth 8 formed on the sliding bolt 5. A ratchet wheel 12 is journaled on the key pin 9 and flatly engages the disk 10, the peripheral teeth 12? of the ratchet wheel being engaged'by the spring 13 anchored as at 14 upon the bottom wall 1 of the lock casing to prevent retrograde movement thereof. To retain the disk 10 and ratchet wheel 12 properly positioned upon the key pin 9, angle clips 15 secured to thebottom'wall of the casing carry extensions that overlie the ratchet wheel 12 as clearly illustrated in Figs. 1 and 2.

The key associated with thelock embodies a shank 16 having a socket 17 in the outer end thereof and carries a lateral lug 18 with an extension pin 19 as shown in Figs. 2 and 3. The key 16 is inserted through the key hole 41 as shown in Figs-2 and 3 and the will be independent of the bolt operating,

disk 10 and will in no manner effect the operation of the sliding bolt 5. When the key 16 has reached a certain point in" the rotation thereof, axial pressure thereon will cause the extension pin 19 topass completely through the opening 20 in the ratchet wheel 12 and enter the opening 21 in the disk 10,

continued rotation of the key rotating the disk 10and retracting the bolt 5 as will be obvious from an inspection of Figs. 1 and 3, the bolt being retracted against the tension of the spring 22 suitably anchored in thelock casing.

The pin 19 may be of different form as shown at 19 in Fig. 5 and the opening 21 in the disk should be of similar eonligu-' ration.

. From the above detailed description of the device, it is believed that the construction and operation thereof Will at once be apparent, it being noted that the key 16 may be inserted in the lock and rotated to position the extension pin 19 in the opening20 of the ratchet disk 12, thereby rotating the the preferred embodiment'of the present invention, it its-nevertheless to be understood that minor changes may be made therein without departing from the spirit and scope of the invention as claimed.

What is claimed as new is 1. In a look, a casing, a tensioned sliding bolt therein, rack teeth formed upon the lower edge of the bolt, a disk journaled' in the casing, teeth formed on a portion of the disk periphery engaging the rack teeth on the bolt, means for normally preventing operation of said disk, said means including a ratchet wheel, and means. for actuating said ratchet Wheel for permitting operation of said disk.

2. In a lock, a casing, a tensioned sliding bolt therein, rack teeth formed upon the lower edge of the belt, a disk journaled in the casing, teeth formed on a portion of the disk periphery engaging the rack teeth on the bolt, means for rotating the disk, said means including a ratchet Wheel, said ratchet wheel and disk having concentric openings therein, and a key adapted to enter the opening in the ratchet wheel and rotatethe same to aline the two openings in the ratchet wheel and disk with the key entering the last named opening for rotating the disk and operating the bolt. I

In testimony whereof I aflix my signature.

ero iconmo GIRALICO. 

